148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

Chapter 12 ■ Using Resource Quotas
Defining Compute Resource Quotas
The compute resource quotas limit the total compute resources used by pods in a namespace. Table 12-2
lists the compute resources supported.
Table 12-2. Supported Compute Resources
Compute Resource
cpu
limits.cpu
limits.memory
memory
requests.cpu
requests.memory
Description
The total of all cpu requests across all pods in non-terminal state cannot
exceed this setting. The container must specify a requests->CPU value if the
cpu quota is set, or pod creation could fail.
The total of all CPU limits across all pods in non-terminal state cannot
exceed this setting. The container must specify a limits->CPU value if the
limits.cpu quota is set, or pod creation could fail.
The total of all memory limits across all pods in non-terminal state cannot
exceed this setting. The container must specify a limits->memory value if
the limits.memory quota is set, or pod creation could fail.
The total of all memory requests across all pods in non-terminal state
cannot exceed this setting. The container must specify a requests->memory
value if the memory quota is set. or pod creation could fail.
Same as cpu.
Same as memory.
Create a ResourceQuota definition file compute-resource-quotas.yaml. In the spec field set hard limits
on the number of pods, total of CPU requests, total of memory requests, CPU limits, and memory limits. Set
NotBestEffort as a scope in the scopes list.
apiVersion: v1
kind: ResourceQuota
metadata:
name: compute-resource-quotas
spec:
hard:
pods: "10"
requests.cpu: "1"
requests.memory: 2Gi
limits.cpu: "2"
limits.memory: 4Gi
scopes:
-
NotBestEffort
The definition file is shown in the vi editor in Figure 12-4.
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